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| 1 | 无机钙钛矿白光LED及可见光通信研究进展(特邀)显示文摘在现代社会中,白光发光二极管(LED)在照明和显示背板等诸多领域都有着重要的基础性作用。为了获得具有优异性能的白光LED,首先需要获得满足白光LED发光需要的高性能的发光材料。而作为一类新兴的半导体材料,无机钙钛矿(CsPbX_(3),X=Cl,Br,I)由于其具有的高发光量子产率、发光波长可调、色纯度高和稳定性好等优点,在发光应用特别是白光LED领域展现出了巨大的潜力。文中将首先分别从光致白光LED和电致白光LED两个方面出发,综述近期在基于无机钙钛矿的白光LED方面所取得的研究进展,随后分别介绍以上两个体系中改性后的无机钙钛矿发光材料与其他发光材料复合形成白光以及无机钙钛矿单组分白光的代表性成果。最后,对钙钛矿白光LED在可见光通信方面所取得的最新进展进行介绍,并且对白光LED以及可见光通信的研究发展趋势与挑战进行了总结和展望。 | 赵双易 莫琼花 汪百前 臧志刚 | 2022 | 红外与激光工程2022，51，1： | 3 |
| 2 | Ternary phase diagram of all-inorganic perovskite CsPbCl_(a)Br_(b)I_(3−a−b)nanocrystals显示文摘All-inorganic lead halide perovskite CsPbX3(X=Cl,Br,and I)nanocrystals(NCs)have shown great application prospects in optoelectronic fields.Their properties can be feasibly tuned by the ratio of different halide ions.Post-synthesis halide anion exchange of Cl‒Br or Br‒I in CsPbX3 NCs allows getting any desired composition of CsPbClxBr3−x and CsPbBr_(x)I_(3−x)(0≤x≤3).However,due to the large difference of the Cl and I radii,they can only substitute each other in a limited ratio to form CsPbCl_(y)I_(3−y)(0 | Xin Lv Gaoyu Chen Xia Zhu Jiakun An Jianchun Bao Xiangxing Xu | 2022 | Nano Research2022，15，8： | 0 |
| 3 | AgAuSe quantum dots with absolute photoluminescence quantum yield of 87.2%:The effect of capping ligand chain length显示文摘Surface ligands of colloidal quantum dots(QDs)have a profound influence on their surface states,which has been verified in the studies of the effect of ligand head groups on the photoluminescence(PL)properties of QDs.However,the investigation of the ligand chain length is limited.Here,we systematically explored the effect of chain length on the Ag_(2)Se QDs by selecting three ligands,1-octanethiol(OTT),1-dodecanethiol(DDT),and 1-hexadecanethiol(HDT),with diverse chain lengths.We found that the PL intensity of Ag_(2)Se QDs increased with the decrease of the ligand chain length due to the enhanced passivation of surface defects emerging from the robust QD-ligand interface binding affinity and the weaker hydrophobic chain–chain interaction.Subsequently,AgAuSe QDs terminated with OTT were obtained by alloying parent OTT-Ag_(2)Se QDs with Au precursor with a record absolute PL quantum yield(PLQY)of 87.2%at 970 nm,facilitating ultrasensitive in vivo angiography imaging in a nude mouse model.We expect that our finding of the important role of the ligand chain length on the optical properties of QDs will be suggestive to the design and synthesis of high-quality QDs,and also look forward to the clinical applications of the ultra-bright AgAuSe QDs. | Ziqiang Sun Cheng Liu Hongchao Yang Xiaohu Yang Yejun Zhang Hongzhen Lin Youyong Li Qiangbin Wang | 2022 | Nano Research2022，15，9： | 0 |
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